I've been researching the ATEM line for a while now, and I'm still puzzled by the fact that the digital audio in of the ATEM. It's simply labeled as "AES/EBU", but there are sever formats that match that description. Is it AES3, or one of the others? The forums I've read call it a multi-channel input. But does that include your standard 2 channel stereo? This is what I need to find out before my church buys this.

So what this all boils down to is, how many channels does the AES/EBU support?

Remember to get a mixer or a analog/digital converter with a delay function if you use unsynced cameras, beacuse before you feed audio into the ATEM you should delay the audio by one frame to maintain perfect lipsync.

I should have clarified myself, sorry about that. I meant Audio going into the computer, via the USB. But I think I just came up with my own answer, since the the Ethernet connection is only for control. And wouldn't send the audio through, even if the computer had it available.